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题名: Polymide/Fe3O4-carbonized Membranes for Gas Separation
作者: Zhao Xuan-Ying1;  Wang Tong-Hua1;  Li Lin1;  Liu Ying1;  Cao Yi-Ming2
关键词: magnetism ;  functional carbon membrane ;  gas separation ;  permeability
刊名: JOURNAL OF INORGANIC MATERIALS
发表日期: 2010
DOI: 10.3724/SP.J.1077.2010.00047
卷: 25, 期:1, 页:47-52
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Materials Science, Ceramics
研究领域[WOS]: Materials Science
英文摘要: Novel functional carbon membranes for gas separation were designed and prepared by incorporating Fe3O4 nanoparticles into carbon membranes precursor polyimide. The as-synthesized membranes were characterized by TEM, XRD and VSM. The effects of Fe3O4 addition and the final pyrolysis temperature on the gas permeability were investigated. The results show that Fe3O4 nanoparticles transformed into other phase morphologies are helpful to form the graphite-like layers during the pyrolysis process, which make the membrane with two types of carbon structure : amorphous carbon and graphite-like layers. All the functional carbon membranes exhibit magnetism. Single gas permeation test results show that the as-synthesized membranes exhibit an outstanding molecular sieving capability together with high gas permeability. The gas permeability of H-2 is 61 times higher than the pure carbon membrane and the H-2/CO2 selectivity is also improved. Fe3O4 addition and the final pyrolysis temperature siginificantly impair the gas permeability. When the Fe3O4 content is 20wt%, the permeabilities of pure gas H-2, CO2, O-2, N-2, CH4 in the functional carbon membrane are 15476, 4385, 1565, 193 and 114 Barrers (1Barrer = 1 x 10(-10) cm(3) (STP) . cm/(cm(2) . s . cmHg)), respecticvely. The final pyrolysis temperature also has a remarkable effect on the gas separation performance.
关键词[WOS]: ETHER SULFONE KETONE) ;  CARBON MEMBRANES ;  MOLECULAR-SIEVES ;  PERFORMANCE ;  POLYIMIDE ;  SIMULATION ;  FILMS
语种: 英语
WOS记录号: WOS:000273793600010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141649
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Univ Technol, Sch Chem Engn, Dept Chem Engn & Mat Sci, State Key Lab Fine Chem,Carbon Res Lab, Dalian 116012, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Zhao Xuan-Ying,Wang Tong-Hua,Li Lin,et al. Polymide/Fe3O4-carbonized Membranes for Gas Separation[J]. JOURNAL OF INORGANIC MATERIALS,2010,25(1):47-52.
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